Special Instructions for Patients on Long-Term Blood Thinners (Coumadin®/Warfarin)
Note: These instructions do not apply to patients taking aspirin.
Coumadin® (warfarin) is an oral anticoagulant used to thin the blood. It can interact with many medications and certain foods, particularly leafy green vegetables. These interactions may decrease or increase the drug’s effect, making regular monitoring essential. Blood levels and dosage adjustments are managed by your local physician, not our clinic.
If you are taking a blood thinner at discharge, you should contact your local physician and have your blood tested within 3–5 days after discharge. We will make every effort to provide instructions to your physician if blood thinners are started after surgery; however, it is your responsibility to ensure this follow-up occurs. Lack of timely monitoring may increase the risk of bleeding or blood clots.
Patients taking oral blood thinners may need to temporarily stop these medications before certain procedures, including surgery, dental work, or tests involving needle sticks. After stopping the medication, it typically takes 3–4 days for its effects to wear off. Because stopping blood thinners can increase the risk of clot formation, short-acting injectable anticoagulants may be prescribed during this period.
These injectable medications generally carry a lower bleeding risk than oral anticoagulants but still require careful use. Contact our office for specific instructions regarding medication management before any procedure.
Please note that while we may provide recommendations regarding anticoagulation management, the final decision and responsibility for these changes rest with the physician managing your care.